hack/vendor.sh can now accept command line arguments
`./hack/vendor.sh github.com/docker/engine-api` will revendor only the
engine-api dependency.
`./hack/vendor.sh github.com/docker/engine-api v0.3.3` will vendor only
engine-api at the specified tag/commit.
`./hack/vendor.sh git github.com/docker/engine-api v0.3.3` is the same
but specifies the VCS for cases where the VCS is something else than git
`./hack/vendor.sh git golang.org/x/sys
eb2c74142fd19a79b3f237334c7384d5167b1b46
https://github.com/golang/sys.git` will vendor only golang.org/x/sys
downloading from the specified URL
Signed-off-by: Tibor Vass <tibor@docker.com>
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Upstream-commit: 80f61c41086cb2be8dbea023667f42a6c3c3248c
Component: engine
0a347eac64